Curse

UI Pack that i use on all my character!
Note that i dont use ALL addons on ALL characters.

Addons that are always enabled (and reasons)

BG Spy: incase i decide to do some pvp, this addon allows you to check yours and the enemy teams composition, even allowing you to send such information to your battleground group!

Successful Interrupt Announcer: Sick and Tired of people saying "Noob interrupt" when you do? then this addon is for you, its a pummel in the face to that type of people!

Titan Panel: A very nice addition to the UI, with lots of functionality, dont want to keep opening the currency tab to check your honor/jp?... NO PROBLEM! theres a plugin for that!, want to know how much your repair is going to cost, and how damaged your armor is, before visiting the Repair npc? They got it!

AtlasLoot Enhanced: Very nice for browsing all those old-school boss drops, which arent in the dungeon journal, among many, many other things!

Deadly Boss Mods: A must have for any raider, and a very nice addon for battlegrounds too, with timerbars, flashyness and sounds, really helps you to NOT look like a noob! :D

Quartz: Casting Bar replacement, replace that boring old blizzard bar, with a very nice customizable and movable one!

TipTac: Adds additional functionality to the tooltip, ranging from changing the background coloring, to showing all sorts of awesome information, like a list of who is targetting (your group/raid only) and who the target is targetting!

Recount: DPS, Interrupt, Healing meters, very nice addon, some guilds make this addon a MUST HAVE!

Ackis Recipe List: Adds a "SCAN" Button to your recipe window, which shows what recipes your missing, and even were to get them, also allows for a waypoint arrow to be added to the map using other addons (for example TomTom)

TomTom: Crazy Taxi style waypoint arrow, you can ctrl+right click on quest numbers on your objectives list, to show an arrow to the area, or you can set custom waypoints (Even chains of waypoints) this addon also works in conjunction with some other addons (Ackis Recipe List for example!)

Prat 3.0: A chat window mod, allows you to change many features of the chat window, from shortening the -realm suffixes on party member names, and shortening the channel names to allowing for easy copying of chat messages you, and others have sent through a well placed button!

Addon Control Panel: a VERY nice addon!!, Hate logging out to enable/disable addons?... then dont!, ACP allows you to enable and disable addons with only a quick  /reload (theres even a button for that too!) you can also save Addon sets for quick swapping!

OneBag3: Merges all your bags into 1, movable, easy to sort window!

Bartender4: Allows for full customization of your action bars, dont like the standard blizzard bars? no problem, shift it! add and reorder bars, totem bars, stance bars and pet bars!

Postal: Did you sell a couple hundred items on the AH last night?, no problem: hit Open All and AFK for a min, even shows total gold gained from mails once you close the mailbox!, and if you cant fit any more mails in your mailbox, will tell you how long until it refreshes and the surplus appears!

SellJunk: Instantly sell all your grey vendor junk, dont like all that "Item sold spam"? no problem, theres an option for that!

X-Perl UnitFrames: Changes the standard blizzard UI to something prettier, with much, much more functionality, usually works straight out of the box with minimal modification, however the customizablility is very nice!

Fishing Buddy: Hate it, or love it? want fishing stats, wanna know were the best place you fished is, to get a certain fish? - Heres the addon that does that, can auto-add a lure to your rod, auto-swap gear sets and more!

MoveAnything: All that UI modification left some standard blizzard Elements looking out of place? NO PROBLEMO! you can shift anything you can see with this, very nice for a truly, fully customizable UI (personally i use it to move those world objectives things, which shows stuff like towers controlled etc, and the Return to Graveyard button, aswell as a few other things, you can also choose to hide the chosen element!)

SexyMap: Makes your Minimap super-sexy, makes the map, calendar, zoom, track, etc, etc buttons movable, and adds a sexy border, you can make all buttons temporarily invisible until hover, so they dont block any of the sexy eye-candy!

MrTrader: Modifies the standard blizzard profession pane, making material requriements easier to see (even without clicking on the recipe), works well with ARL (Ackis Recipe List)!

OPie: One of my all time favorite addons, no contest, allows you to add shortcuttable action rings to your ui which you can add actions to, so they dont interfere with normal play, add ANYTHING from Mounts, to buffs, to actual attacks - even tracking icons etc, etc!!

VendorValue: Auto-highlights the quest reward that sells for the most gold to vendors, you can change to something thats an upgrade however, so your not stuck with VVs choice!

AudioX II: Lets you browse and play ANY sound in the game, login screen sounds, character emote sounds, boss sounds, even the L70ETC song: Power of the Horde, and the Lament of the Highborne!

Calc: Need to work something out, well now you can without tabbing out to the calculator on your computer, this super-lightweight addon adds calculator functionality to your chat!
for example:  /calc 2*3   would return the result  Calc: 6  on a new chat line, perfect for working out how much gold youd gain from the AH etc, etc!

Situational Addons

Fulminator: The only reason i use this, is because the standard UI doesnt have an animation effect for Lava Burst, when the cooldown is reset via elemental talents, this adds one!

Can't Heal You: Ever get called a noob because someone died, but you couldnt heal them as they were out of Line of Sight, this solves that problem, whispers your target if theyre out of Line of Sight, out of Range or tells the party if you get incapacitated and cant heal anymore, even tells when you recover, avoid all that mis-directed blame, or... some of it atleast!

Healbot: Obviously this isnt used on every single character, i mean - it would have limited functionality on a warrior, hunter or a rogue aside from easy intervenes, misdirects or Tricks of the Trade!

Decursive: Mainly used on my mage, i use this only when im not on a healing class and thus dont have healbot enabled, otherwise if on a healer i use Healbot instead, rather than having 2 addons at the same time, allows for easy dispels, and even allows you to quickly CC friendly targets that have been mindcontrolled!

Well, theres my addon pack if you just saw "TEXT WALL" ill add a TL;DR now.

TL;DR: This addon pack is pretty useful in multiple situations, with addons that do most things you would need!

Memory Usage Information
The entire pack isnt very memory intensive, and infact according to TitanPanels memory usage module, my total addon memory usage with all addons enabled is just a meager 36MB!